Thank you. I admit, I aim to watch my least favorites as much as my favorites in the hope they lose.
I regularly tell teammates I can't play tennis so I can watch it.

Considering two of your least favorite are Nadal and Del Potro, you'd probably be better off doing something else, just saying They are rarely going lose anyway, especially Nadal, just stick around for Tomic's matches.

Tomic's matches the last 6 months have filled me with overwhelming joy. del Potro I don't have much justification for disliking, I just kinda do, so I feel a pang of guilt when I feel glee at his losses. Nadal is the bane of my existence though